Looks nice. But would still recommend a slip or ball joint in one of the headers. Likely strees point will be at the Y. The headers may be long enough that it's not an issues, but still.

2" for headers is OK, I guess, but could go down to  1.75".

Finn

Steve Thomas wrote:

I have been lurking on this list for some time, really enjoying and  learning from all of your experiences.  I'm the guy who has Mistral's  serial number 001, two rotor normally aspirated engine.

I just finished tacking this exhaust system together and thought that  I'd ask for comments.  The current material is mild steel, but my  plan is to take it to Burns Stainless (just down the road from me)  and have them duplicate it in 16 ga.  321 stainless.  The collector  is from Burns, as is the muffler.  If you can see the tacks, you'll  be able to see why I'm taking it elsewhere.  ;-)  The header pipes  are 2" and the combined pipe after the collector is 2 1/2".  This was  recommended by Burns.

After fabrication, I plan to have it coated with HPC HyperCoat  Extreme as my design goal was to get the heat out as quickly and  directly as possible and keep as much in the pipes as possible until  it exits to atmosphere.

The oddball bends in the header were designed to keep the header  pipes the same length, which they are.  Given all the difficulty some  have had with their exhaust systems, I'd thought that I'd throw it  out there for comments.

Best Regards,

Steve Thomas 
SteveT.Net

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